Shaker for grates.



W. J.- SIMPSON. SHAKER FOB. GRATES.

APPLIGATIOIN FILED APB-.6, 1910.

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Patented Mar. 28, 1911.

W; J. SIMPSON; SHAKER FOR GHATES.

987,75 APPLICATION FILED APB.6, 1910. Patented Mar. 28 1911.

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WILLIAM J'. SIMPSON, OF HOPE, IDAHO, ASSIGNOR TO SIMPSON GRATE SHAKERCOM- PANY, OF SPOKANE, WASHINGTON, A CORPORATION OF WASHINGTON.

SHAKER FOR GRATES.

To all whom it may concern:

Be it known that I, WVILLIAM J. SIMPSON, a citizen of the United States,residing at Hope, in the county of Bonner and State of Idaho, haveinvented certain new and useful Improvements in Shakers for Grates, ofwhich the following is a specification.

This invention relates to shakers for grates, and it is especiallyadapted for use in connection with the grates of locomotive fire boxes,although capable of use elsewhere if desired.

The object of the invention is to provide improved means for shaking thegrate by the use of power devices, the mechanism comprising a smallengine or the like arranged to drive a friction roller which can bemoved to engagement with either of a pair of cooperating frictionrollers which are connected by suitable transmission de vices to a rockshaft. This rock shaft may be operatively connected by means of clutchesand other parts to the grate sections, and the arrangement is such thatvarious sets of grate bars may be individually operated, so that, forexample, the bars at the front or back or either side of the grate maybe individually operated, to clear the fire at various places orsections, according to local conditions.

The details of the invention, and the manner of operation, will be morefully evident from the following description and the accompanyingdrawings in which Figure 1 is a side elevation, partly in section, of alocomotive fire box and cab, showing the grate shaker in position. Fig.2 is an elevation thereof, looking into the cab from the rear. Fig. 3 isa plan View of the shaking mechanism and the grate. Figs. 4 and 5 aredetails in plan and side elevation of the friction rollers andassociated devices.

Referring specifically to the drawings, 6 indicates the cab of alocomotive, and 7 the fire box provided with rocking grate bars 8 of anydesired or suitable type. As shown, the grate bars are arranged in foursections or sets, comprising two front and two rear sets each consistingof two sections one of which is at the right side of the fire box andthe other at the left side. The number of sets or sections may be variedas desired. The grate bars of each set are operatively connected to anordinary reciprocating bar Specification of Letters Patent.

Application filed April 6, .1910.

Patented Mar. 28, 1911. Serial No. 553,8:17.

9 located under the grate bars and extending under the cab floor. Fourbars are shown connected to the respective sets of the grate andindividually controlling said sets. The outer end of each bar isconnected by a link 10 to an arm 11 depending from a cuff 12 which isloose on a rock shaft 13 which extends crosswise under the floor of thecab, where it is supported by hangers 1 1 at each end and at the middle.The link 11 and the outer end of the bar 9 are supported by a swinginghanger 15 from a bracket 16 fastened to the breast of the fire box.

Each sleeve 12 is provided with notches 12 to form one member of aclutch the other member of which consists of a collar 16 splined as at17 on the rock shaft 13, and having projections to engage in saidnotches. Each collar may be shifted to engagement with or disengagementfrom the correspond ing sleeve 12 by means of a hand lever 18 whichprojects up through an opening in the floor of the cab and is connectedatits lower end to one end of a forked lever 19 which is pivoted to abracket 20 on the under side of the cab floor and which has a fork 21-at its opposite end engaging in a groove in the collar 16, in order toshift said collar and to allow the same to turn with the rock shaft. Asshown, the respective clutches are connected to corresponding handlevers in the manner described, so that the several grate sections maybe severally or individually operated by appropriate movement of thecorresponding lever 18, when the shaft is rocked.

For rocking the shaft 13, one end thereof is provided with a long arm 22which projects up through the floor of the ledge or side platform of thecab and is connected by a pitman 23 to a gear wheel 24 which meshes witha similar gear wheel 25, so that when these gears are rotated the shaft13 is rocked in consequence of the oscillation of the lever arm 22.

The shafts 26 and 27 of the gears 2 1 and 25 are supported in bearings011 a base or frame 28 resting on the platform of the cab at one sidethereof. The respective shafts are provided with rollers 29 and 30, fastthereon. These rollers are spaced apart, and located between the same isa small friction roller 31 mounted on the shaft 32 carried in slidingboxes 33 at opposite sides of the frame 28. These boxes are connected toa bail or yoke 34 attached to a hand lever 35 fulcrumed at 36 on abracket at the front end of the base. The shaft 32 of the intermediateroller is also provided at the outer side of the frame with a gear 37 inmesh with a pinion 38 driven by connection to a small engine 39supported in convenient position in the cab. This engine may be a smallsteam engine receiving its steam from the main boiler, or it may be asmall air motor drivenby compressed air from the air brake tank. Or itmay be a small electric motor on engines provided with dynamos; or anyother kind of power or motor may be provided, no limitation in thisrespect being implied.

By means of the hand lever 35 the friction roller 31 may be shifted toengage the same with either of the rollers 29 or 30, or to a neutralposition between the same. hen so engaged the gears 2e and 25 will bedriven in one direction or the other and the shaft 13 will be rockedaccordinglyf Then by manipulation of the levers 18 the corre spondinggrate sections will be shaken. The purpose of using two friction rollers29 and 30 with either of which the driver 31 may be engaged, is tochange the motion suddenly during any desired stroke, or to start theshaking action in either direction for the purpose of breakmg up anyclinkers which may be lodged between the grate bars.

The invention is not limited to the exact embodiment shown, but variousmodifications may be made within the scope of the invention.

What I claim as new is 1. The combination of a shaking grate dividedinto longitudinal sections each com- ;prising separate front and rearsets of rocking grate bars, reciprocating rods located under the grateand connected to the barsof sald sets respectively, a rock shaftextending across in front of the grate,

means to operate the shaft, clutches located on the shaft, andcorresponding in number and position to-the respective rods, one memberof each clutch being loose on the shaft and having a dependmg armconnected to the front end of one of said rods, and the other memberbeing shiftable on' the shaft to engage or disengage the clutch.

The combination with a locomotive cab and firebox, of a shaking grate inthe firebox, an operating rod connected thereto and projectingrearwardly under the cab, a rock shaft extending across under the caband provided at one end with an operating lever extending upwardlythrough the floor of the cab, a connection between the rock shaft and irod, including clutch members onthe shaft, and a controlling leverextending through the floor of the cab, and connected to the clutch.

3. The combination of a locomotlve cab and firebox, a shaking grate inthe firebox, a rock shaft extending across under the cab and connectedto the grate the connections including a clutch, and motor driven meansin the cab to operate the shaft, said means including frictiontransmission mechanism and a lever extending from the rock shaft throughthe cab floor.

In testimony whereof, I affix my signature in presence of two wltnesses.WILLIAM J. SIMPSONL WVitnesses JOHN A. TIPTON, SAMUEL OWEN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

